“Farfield” behavior of solutions to partial differential equations : asymptotic expansions and maximal rates of decay along a ray
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Serie 3, Volume 26 (1972) no. 4, p. 807-827 
@article{ASNSP_1972_3_26_4_807_0,
     author = {Arena, Orazio and Littman, Walter},
     title = {``Farfield'' behavior of solutions to partial differential equations : asymptotic expansions and maximal rates of decay along a ray},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     publisher = {Scuola normale superiore},
     volume = {Ser. 3, 26},
     number = {4},
     year = {1972},
     pages = {807-827},
     zbl = {0219.35012},
     mrnumber = {412574},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1972_3_26_4_807_0}
}

Arena, Orazio; Littman, Walter. “Farfield” behavior of solutions to partial differential equations : asymptotic expansions and maximal rates of decay along a ray. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Serie 3, Volume 26 (1972) no. 4, pp. 807-827. http://www.numdam.org/item/ASNSP_1972_3_26_4_807_0/

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